Answer:
y = 29
Step-by-step explanation:
Given the quadratic equation, y = x² + 4:
In order to find the value of y if x = 5, simply substitute the value of x into the given equation.
y = x² + 4
y = (5)² + 4
Since 5² is the same as 5 × 5 = 25, then:
y = 25 + 4
y = 29
Therefore, when x = 5, the value of y = 29.